Le 28/01/2025 à 16:07, Julian Vetter a écrit :
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On 1/28/25 15:16, Christophe Leroy wrote:
Le 28/01/2025 à 14:57, Julian Vetter a é
Le 28/01/2025 à 16:24, Christophe Leroy a écrit :
Le 28/01/2025 à 16:07, Julian Vetter a écrit :
[Vous ne recevez pas souvent de courriers de jul...@outer-limits.org.
Découvrez pourquoi ceci est important à https://aka.ms/
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On 1/28/25 15:16, Christophe Ler
On Tue, Jan 28, 2025 at 03:59:29PM +0100, Christophe Leroy wrote:
> Le 27/01/2025 à 19:13, Dmitry V. Levin a écrit :
> > According to the Power Architecture Linux system call ABI documented in
> > [1], when the syscall is made with the sc instruction, both a value and an
> > error condition are ret
On Tue, Jan 28, 2025 at 3:59 PM Christophe Leroy
wrote:
>
>
> Le 27/01/2025 à 19:13, Dmitry V. Levin a écrit :
> > According to the Power Architecture Linux system call ABI documented in
> > [1], when the syscall is made with the sc instruction, both a value and an
> > error condition are returned
Hi,
I missed a few CCs, looping them in now. Apologies for the extra noise.
thanks,
kienan
On 1/27/25 1:47 PM, Kienan Stewart wrote:
In the upstream commit 214c0eea43b2ea66bcd6467ea57e47ce8874191b
("kbuild: add $(objtree)/ prefix to some in-kernel build artifacts")
artifacts required for build
Le 27/01/2025 à 19:13, Dmitry V. Levin a écrit :
According to the Power Architecture Linux system call ABI documented in
[1], when the syscall is made with the sc instruction, both a value and an
error condition are returned, where r3 register contains the return value,
and cr0.SO bit specifies
Le 28/01/2025 à 10:16, Dmitry V. Levin a écrit :
These functions are going to be needed on all HAVE_ARCH_TRACEHOOK
architectures to implement PTRACE_SET_SYSCALL_INFO API.
The subject is misleading. syscall_set_return_value() already exists on
most architectures and was not addressed by comm
Le 28/01/2025 à 10:16, Dmitry V. Levin a écrit :
Similar to syscall_set_arguments() that complements
syscall_get_arguments(), introduce syscall_set_nr()
that complements syscall_get_nr().
syscall_set_nr() is going to be needed along with
syscall_set_arguments() on all HAVE_ARCH_TRACEHOOK
arch
Le 27/01/2025 à 19:14, Dmitry V. Levin a écrit :
Since the introduction of SECCOMP_RET_TRACE support, the kernel supports
simultaneously both the generic kernel -ERRORCODE return value ABI and
the powerpc sc syscall return ABI for PTRACE_EVENT_SECCOMP tracers.
This change is an attempt to addr
On 1/28/25 15:16, Christophe Leroy wrote:
Le 28/01/2025 à 14:57, Julian Vetter a écrit :
Remove the eieio() calls in _memcpy_fromio, to bring its implementation
closer to the one from lib/iomem_copy.c. These eieio() calls don't seem
to be necessary, because the _memcpy_toio completely omits th
Remove the eieio() calls in _memcpy_fromio, to bring its implementation
closer to the one from lib/iomem_copy.c. These eieio() calls don't seem
to be necessary, because the _memcpy_toio completely omits them. Also
the legacy code from ppc was not doing them.
Signed-off-by: Julian Vetter
---
arch
Le 28/01/2025 à 00:22, Frank van der Linden a écrit :
If hugetlb_cma_only is enabled, we know that hugetlb pages
can only be allocated from CMA. Now that there is an interface
to do early reservations from a CMA area (returning memblock
memory), it can be used to allocate hugetlb pages from CM
On 1/27/25 1:06 PM, Vaibhav Jain wrote:
> Hi Athira,
>
> Thanks for reviewing this patch series. My responses to your review
> comment inline below:
>
>
> Athira Rajeev writes:
>
>>> On 23 Jan 2025, at 5:37 PM, Vaibhav Jain wrote:
>>>
>>> Introduce a new PMU named 'kvm-hv' to report Book3s
On Tue, Jan 28, 2025 at 07:01:47PM +0100, Christophe Leroy wrote:
> Le 27/01/2025 à 19:14, Dmitry V. Levin a écrit :
> > Since the introduction of SECCOMP_RET_TRACE support, the kernel supports
> > simultaneously both the generic kernel -ERRORCODE return value ABI and
> > the powerpc sc syscall ret
On Mon, Jan 27, 2025 at 03:42:39PM +, Matthew Wilcox wrote:
> On Mon, Jan 27, 2025 at 04:55:58PM +0200, Jani Nikula wrote:
> > You could have static const within functions too. You get the rodata
> > protection and function local scope, best of both worlds?
>
> timer_active is on the stack, so
PTRACE_SET_SYSCALL_INFO is a generic ptrace API that complements
PTRACE_GET_SYSCALL_INFO by letting the ptracer modify details of
system calls the tracee is blocked in.
This API allows ptracers to obtain and modify system call details
in a straightforward and architecture-agnostic way.
Current im
Similar to syscall_set_arguments() that complements
syscall_get_arguments(), introduce syscall_set_nr()
that complements syscall_get_nr().
syscall_set_nr() is going to be needed along with
syscall_set_arguments() on all HAVE_ARCH_TRACEHOOK
architectures to implement PTRACE_SET_SYSCALL_INFO API.
S
These functions are going to be needed on all HAVE_ARCH_TRACEHOOK
architectures to implement PTRACE_SET_SYSCALL_INFO API.
This partially reverts commit 7962c2eddbfe ("arch: remove unused
function syscall_set_arguments()") by reusing some of old
syscall_set_arguments() implementations.
Signed-off-
Power ISA v3.1 implementations in the Linux Compliancy Subset and
lower are not required to implement broadcast TLBIE, and in fact
Microwatt doesn't. To avoid the need to specify "disable_tlbie" on
the kernel command line on SMP Microwatt systems, this defines a
config option that asserts that bro
This patch series updates the kernel support for the Microwatt
soft-core and its implementation on FPGA systems, particularly the
Digilent Arty A7-100 FPGA development board.
Microwatt now supports almost all of the features of the SFFS (Scalar
Fixed-poin and Floating-point Subset) compliancy subs
This adds support for Microwatt systems with more than one core, and
updates the device tree for a 2-core version. (This does not prevent
the kernel from running on a single-core system.)
Signed-off-by: Paul Mackerras
---
arch/powerpc/boot/dts/microwatt.dts | 34 ++--
a
Microwatt now implements ISA v3.1 (SFFS compliancy subset), including
prefixed instructions, scv/rfscv, and the FSCR, HFSCR, TAR, and CTRL
registers. The privileged mode of operation is now hypervisor mode
and there is no privileged non-hypervisor mode; the MSR[HV] bit is
forced to 1.
Besides upd
This uses the 'wait' instruction to pause instruction execution when
idle until an interrupt occurs.
Signed-off-by: Paul Mackerras
---
arch/powerpc/platforms/microwatt/setup.c | 9 +
1 file changed, 9 insertions(+)
diff --git a/arch/powerpc/platforms/microwatt/setup.c
b/arch/powerpc/pl
This is to allow us to select Litex MMC host controller driver, which
drives the litesdcard gateware.
Signed-off-by: Paul Mackerras
---
arch/powerpc/platforms/microwatt/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/platforms/microwatt/Kconfig
b/arch/powerpc/platforms/
Hello:
This series was applied to jaegeuk/f2fs.git (dev)
by Eric Biggers :
On Sun, 1 Dec 2024 17:08:25 -0800 you wrote:
> This patchset applies to v6.13-rc1 and is also available in git via:
>
> git fetch
> https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git
> crc32-lib-v4
clang-18
arc nsimosci_hs_smp_defconfiggcc-13.2.0
arc randconfig-001-20250128gcc-13.2.0
arc randconfig-002-20250128gcc-13.2.0
arm allmodconfigclang-18
arm allmodconfig
After the previous change 'sd' is always NULL.
Signed-off-by: Oleg Nesterov
Reviewed-by: Kees Cook
---
kernel/seccomp.c | 21 -
1 file changed, 8 insertions(+), 13 deletions(-)
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index 281e853bae8c..4bd2eb50f77b 100644
--- a/ke
arch/mips/Kconfig selects HAVE_ARCH_SECCOMP_FILTER so syscall_trace_enter()
can just use __secure_computing(NULL) and rely on populate_seccomp_data(sd)
and "sd == NULL" checks in __secure_computing(sd) paths.
With the change above syscall_trace_enter() can just use secure_computing()
and avoid #if
Hello,
Link to v1: https://lore.kernel.org/all/20250120134409.ga21...@redhat.com/
Only 2/4 was changed, please see interdiff at the end.
I've included the acks I got on 1/4, 3/4, and 4/4 (thanks!).
Oleg.
---
arch/mips/kernel/ptrace.c | 20 ++-
arch/powerpc/kernel/ptra
Depending on CONFIG_HAVE_ARCH_SECCOMP_FILTER, __secure_computing(NULL)
will crash or not. This is not consistent/safe, especially considering
that after the previous change __secure_computing(sd) is always called
with sd == NULL.
Fortunately, if CONFIG_HAVE_ARCH_SECCOMP_FILTER=n, __secure_computin
After the previous changes 'sd' is always NULL.
Signed-off-by: Oleg Nesterov
Reviewed-by: Kees Cook
---
arch/powerpc/kernel/ptrace/ptrace.c | 2 +-
include/linux/seccomp.h | 6 +++---
kernel/entry/common.c | 2 +-
kernel/seccomp.c| 12 +--
On Tue, Jan 28, 2025 at 04:04:34PM +0100, Christophe Leroy wrote:
> Le 28/01/2025 à 10:16, Dmitry V. Levin a écrit :
> > These functions are going to be needed on all HAVE_ARCH_TRACEHOOK
> > architectures to implement PTRACE_SET_SYSCALL_INFO API.
>
> The subject is misleading. syscall_set_return_v
On Tue, Jan 28, 2025 at 04:13:52PM +0100, Christophe Leroy wrote:
> Le 28/01/2025 à 10:16, Dmitry V. Levin a écrit :
> > Similar to syscall_set_arguments() that complements
> > syscall_get_arguments(), introduce syscall_set_nr()
> > that complements syscall_get_nr().
> >
> > syscall_set_nr() is go
Hi Christophe, thanks for your comments. Replies inline below.
On Tue, Jan 28, 2025 at 12:55 AM Christophe Leroy
wrote:
>
>
>
> Le 28/01/2025 à 00:22, Frank van der Linden a écrit :
> > If hugetlb_cma_only is enabled, we know that hugetlb pages
> > can only be allocated from CMA. Now that there i
Le 28/01/2025 à 14:57, Julian Vetter a écrit :
Remove the eieio() calls in _memcpy_fromio, to bring its implementation
closer to the one from lib/iomem_copy.c. These eieio() calls don't seem
to be necessary, because the _memcpy_toio completely omits them. Also
the legacy code from ppc was not
On Tue, Jan 28, 2025 at 6:22 AM Joel Granados wrote:
> On Mon, Jan 27, 2025 at 03:42:39PM +, Matthew Wilcox wrote:
> > On Mon, Jan 27, 2025 at 04:55:58PM +0200, Jani Nikula wrote:
> > > You could have static const within functions too. You get the rodata
> > > protection and function local sco
The next patch aligns implementation of cpumask_next_wrap() with the
find_next_bit_wrap(), and it changes function signature.
To make the transition smooth, this patch deprecates current
implementation by adding an _old suffix. The following patches switch
current users to the new implementation o
cpumask_next_wrap_old() has two additional parameters, comparing to its
generic counterpart find_next_bit_wrap(). The reason for that is
historical.
Before 4fe49b3b97c262 ("lib/bitmap: introduce for_each_set_bit_wrap()
macro"), cpumask_next_wrap() was used to implement for_each_cpu_wrap()
iterator
cpumask_next_wrap() is overly complicated, comparing to it's generic
version find_next_bit_wrap(), not mentioning it duplicates the above.
It roots to the times when the function was used in the implementation
of for_each_cpu_wrap() iterator. The function has 2 additional parameters
that were used
The function opencodes for_each_cpu_wrap() macro. As a loop termination
condition it uses cpumask_empty(), which is O(N), and it makes the whole
algorithm O(N^2). Switching to for_each_cpu_wrap() simplifies the logic,
and makes the algorithm linear.
Signed-off-by: Yury Norov
---
arch/powerpc/xmo
On Tue, Jan 28, 2025, at 16:34, Christophe Leroy wrote:
> Le 28/01/2025 à 16:24, Christophe Leroy a écrit :
>> Le 28/01/2025 à 16:07, Julian Vetter a écrit :
>>> With 'ppc' I was refering to 'include/asm-ppc/io.h'. But you're right,
>>> when going back a bit, in the 'include/asm-powerpc/io.h' there
A loop based on cpumask_next_wrap() opencodes the dedicated macro
for_each_online_cpu_wrap(). Using the macro allows to avoid setting
bits affinity mask more than once when stride >= num_online_cpus.
This also helps to drop cpumask handling code in the caller function.
CC: Nick Child
Signed-off-
On Tue, Jan 28, 2025 at 05:00:31PM +0100, Christophe Leroy wrote:
> Le 28/01/2025 à 16:52, Dmitry V. Levin a écrit :
> > On Tue, Jan 28, 2025 at 03:59:29PM +0100, Christophe Leroy wrote:
> >> Le 27/01/2025 à 19:13, Dmitry V. Levin a écrit :
> >>> According to the Power Architecture Linux system cal
Le 28/01/2025 à 16:52, Dmitry V. Levin a écrit :
On Tue, Jan 28, 2025 at 03:59:29PM +0100, Christophe Leroy wrote:
Le 27/01/2025 à 19:13, Dmitry V. Levin a écrit :
According to the Power Architecture Linux system call ABI documented in
[1], when the syscall is made with the sc instruction, b
On Wed Jan 29, 2025 at 8:53 AM AEST, Paul Mackerras wrote:
> Power ISA v3.1 implementations in the Linux Compliancy Subset and
> lower are not required to implement broadcast TLBIE, and in fact
> Microwatt doesn't. To avoid the need to specify "disable_tlbie" on
> the kernel command line on SMP Mi
On Wed Jan 29, 2025 at 8:55 AM AEST, Paul Mackerras wrote:
> This adds support for Microwatt systems with more than one core, and
> updates the device tree for a 2-core version. (This does not prevent
> the kernel from running on a single-core system.)
>
> Signed-off-by: Paul Mackerras
Well, I'm
On Wed Jan 29, 2025 at 8:52 AM AEST, Paul Mackerras wrote:
> Microwatt now implements ISA v3.1 (SFFS compliancy subset), including
> prefixed instructions, scv/rfscv, and the FSCR, HFSCR, TAR, and CTRL
> registers. The privileged mode of operation is now hypervisor mode
> and there is no privilege
On Wed Jan 29, 2025 at 8:51 AM AEST, Paul Mackerras wrote:
> This is to allow us to select Litex MMC host controller driver, which
> drives the litesdcard gateware.
>
> Signed-off-by: Paul Mackerras
Acked-by: Nicholas Piggin
> ---
> arch/powerpc/platforms/microwatt/Kconfig | 1 +
> 1 file chan
On Wed Jan 29, 2025 at 8:52 AM AEST, Paul Mackerras wrote:
> This uses the 'wait' instruction to pause instruction execution when
> idle until an interrupt occurs.
>
> Signed-off-by: Paul Mackerras
> ---
> arch/powerpc/platforms/microwatt/setup.c | 9 +
> 1 file changed, 9 insertions(+)
>
On Wed, Jan 29, 2025 at 04:06:03PM +1000, Nicholas Piggin wrote:
> On Wed Jan 29, 2025 at 8:52 AM AEST, Paul Mackerras wrote:
> > This uses the 'wait' instruction to pause instruction execution when
> > idle until an interrupt occurs.
> >
> > Signed-off-by: Paul Mackerras
> > ---
> > arch/powerpc
On Wed, Jan 29, 2025 at 04:21:26PM +1000, Nicholas Piggin wrote:
> On Wed Jan 29, 2025 at 8:55 AM AEST, Paul Mackerras wrote:
> > This adds support for Microwatt systems with more than one core, and
> > updates the device tree for a 2-core version. (This does not prevent
> > the kernel from runnin
On Wed, Jan 29, 2025 at 04:14:25PM +1000, Nicholas Piggin wrote:
> On Wed Jan 29, 2025 at 8:53 AM AEST, Paul Mackerras wrote:
> > Power ISA v3.1 implementations in the Linux Compliancy Subset and
> > lower are not required to implement broadcast TLBIE, and in fact
> > Microwatt doesn't. To avoid t
On Wed, Jan 29, 2025 at 04:36:14PM +1000, Nicholas Piggin wrote:
> On Wed Jan 29, 2025 at 8:52 AM AEST, Paul Mackerras wrote:
> > Microwatt now implements ISA v3.1 (SFFS compliancy subset), including
> > prefixed instructions, scv/rfscv, and the FSCR, HFSCR, TAR, and CTRL
> > registers. The privil
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